Max3580 direct-conversion tv tuner, Typical operating characteristics (continued) – Rainbow Electronics MAX3580 User Manual
Page 8
MAX3580
Direct-Conversion TV Tuner
8
_______________________________________________________________________________________
0
10
5
20
15
25
30
UHF MODE NOISE FIGURE
vs. VOLTAGE GAIN
MAX3580 toc08
VOLTAGE GAIN (dB)
NOISE FIGURE (dB)
60
70
75
65
80
85
90
T
A
= +25
°C
T
A
= +55
°C
T
A
= -40
°C
T
A
= +85
°C
f
RF
= 620MHz
BB_AGC = 2.85V
10
40
30
20
50
60
70
80
90
100
110
0
1.0
0.5
1.5
2.0
2.5
3.0
VOLTAGE GAIN
vs. BB_AGC CONTROL VOLTAGE
MAX3580 toc09
BB_AGC CONTROL VOLTAGE (V)
GAIN (dB)
T
A
= +25
°C, +55°C
T
A
= -40
°C
T
A
= +85
°C
RF_AGC = 2.85V
BASEBAND FILTER REJECTION RATIO
FREQUENCY (MHz)
REJECTION RATIO (dB)
MAX3580 toc10
0
5
10
15
20
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
VHF INPUT
UHF INPUT
NOISE LIMITED
-50
-5
-45
-40
-35
-30
-25
-20
-15
-10
0
5
NORMALIZED BASEBAND FREQUENCY
RESPONSE
MAX3580 toc11
FREQUENCY (MHz)
GAIN (dB)
0
2
1
3
4
5
T
A
= +25
°C
T
A
= 0
°C
T
A
= +85
°C
BB_BW<3:0> = "1011"
8MHz CHANNEL MODE
-50
-5
-45
-40
-35
-30
-25
-20
-15
-10
0
5
NORMALIZED BASEBAND FREQUENCY
RESPONSE
MAX3580 toc12
FREQUENCY (MHz)
GAIN (dB)
0
2
1
3
4
5
T
A
= +25
°C
T
A
= 0
°C
T
A
= +85
°C
BB_BW<3:0> = "1001"
7MHz CHANNEL MODE
-50
-5
-45
-40
-35
-30
-25
-20
-15
-10
0
5
NORMALIZED BASEBAND FREQUENCY
RESPONSE
MAX3580 toc13
FREQUENCY (Hz)
GAIN (dB)
0
10
5
15
20
25
T
A
= +25
°C
T
A
= 0
°C
T
A
= +85
°C
BB_BW<3:0> = "1011"
8MHz CHANNEL MODE
NORMALIZED BASEBAND FREQUENCY
RESPONSE
MAX3580 toc14
FREQUENCY (MHz)
GAIN (dB)
0
5
10
15
20
25
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
5
T
A
= +25
°C
T
A
= +85
°C
T
A
= 0
°C
BB_BW <3:0> = "1001"
7MHz CHANNEL MODE
Typical Operating Characteristics (continued)
(Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)